Easy Costco St. Louis Ribs – Oven + Grill BBQ Recipe
Tender St. Louis rib portions are cooked low and slow in the oven, then finished on the grill for the perfect BBQ rib experience.
Servings 8 people
Ingredients
- 6-8 lbs St. Louis Rib portions
For the dry rub
- 2 tbsp kosher salt
- 1 tbsp freshly cracked peppercorns
- 1 tsp sun-dried tomato powder optional
- 1 tsp garlic powder
- 1 tsp onion powder
- 1 tsp sweet paprika
- 1 tsp dried thyme
For the homemade BBQ sauce
- 2 cups ketchup
- 3 tbsp mild vinegar (apple cider or white vinegar)
- 4 tbsp molasses
- 1 ½ tsp garlic powder
- 1 ½ tsp sweet paprika
- ½ tsp hot paprika
- 1 tbsp Worcestershire Sauce
- 1 tsp mustard powder
Instructions
Starting the ribs in the oven
- Preheat the oven to 275 degrees.
- Combine all the ingredients for the dry rub into a bowl.
- Line a sheet pan with foil and place the rib on top of it. Make sure there is enough foil to make a pouch and completely cover the ribs.
- Pat the ribs dry with a paper towel before rub all the dry rub over all the pork.
- Seal the pork in the foil and place into the oven.
- Cook in the oven for 2 ½ to 3 hours or until the internal temperature of the pork is between 200-205 degrees and more of the bone is exposed.
- While the ribs are cooking, combine together all the ingredients for the BBQ sauce. Taste and adjust ingredients accordingly and then refrigerate the sauce until it's time to use.
Finishing on the grill
- Heat the grill up to around 400-450 or medium high.
- Remove the pork from the oven.
- Pour about ½ of the sauce into a bowl for brushing on the pork. Save the rest for serving.
- Place each pork rib portion directly on the grill grates. Brush with the BBQ sauce.
- Rotate the pork with tongs once you have marks on one side. Add more sauce and continue doing this until the pork is grilled all the way around. Remove to a clear sheet pan.
- Allow 5 to 10 minutes before serving. Serve with remaining BBQ sauce.
Notes
If the pork finishes before you ready to put it on the grill, you can keep it warm in the oven. Just turn the oven down to 175 degrees and hold until you are ready to grill.